| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this has [not/n't] [been] | 84 |
|
| 2 | this has [not/n't] been | 84 |
|
| 3 | this has not [been] | 75 |
|
| 4 | this has n't [been] | 9 |
|
